using System;
using System.Collections.Generic;
using
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Collections;
using

namespace HelloWorld
{
    public partial class Form1 : Form
    {
   
        private string FileName="a.txt";
        private string FileContent;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            FileInfo info = new FileInfo(FileName);
            if (!info.Exists)
            {
                MessageBox.Show("File Does't Exist!Will Create!");
            }
            FileStream fs=info.Open(FileMode.OpenOrCreate,FileAccess.ReadWrite,FileShare.ReadWrite);
            StreamReader sr=new StreamReader(fs);
            string strContent=sr.ReadLine();
            sr.Close();
            fs.Close();
            this.textContent.Text=strContent;
            this.FileContent=strContent;

        }

        private void Form1_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                ArrayList listContent = new ArrayList();
                //将fileContent按照空格或者制表符分割成字符串组
                string[] strContent = FileContent.Split(null);
                foreach (string str in strContent)
                {
                    if (str != "")
                    {
                        listContent.Add(str);
                    }
                }
                string strDisplay = "";
                foreach (object obj in listContent)
                {
                    string str = obj as string;
                    if (str != null)
                    {
                        strDisplay += str + System.Environment.NewLine;
                    }
                }
                MessageBox.Show(strDisplay);
            }
            //右键
            else
            {
                Hashtable ht =new Hashtable();
                //将FileContent按照空格或者制表符分割成字符串数组
                string[] strContent=FileContent.Split(null);
                int number=0;
                foreach(string str in strContent)
                {
                    if(str!="")
                    {
                        ht.Add("Number" + number.ToString(), str);
                    }
                    number++;
                }
                string strDisplay="";
                IDictionaryEnumerator enumer=ht.GetEnumerator();
                while(enumer.MoveNext()){
                    strDisplay+=enumer.Key.ToString()+":"+enumer.Value.ToString()+System.Environment.NewLine;
                }
                MessageBox.Show(strDisplay);
            }         

        }

        private void btnSaveFile_Click(object sender, EventArgs e)
        {
            FileInfo info = new FileInfo(FileName);
            if (!info.Exists)
            {
                MessageBox.Show("   File Doesn't Exist! Will Create!");
            }
            FileStream fs = info.Open(FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite);
            StreamWriter sw = new StreamWriter(fs);
            sw.WriteLine(FileContent);
            sw.Close();
            fs.Close();
        }

        private void btnLoadFile_Click(object sender, EventArgs e)
        {
            FileInfo info = new FileInfo(FileName);
            if (!info.Exists)
            {
                MessageBox.Show("   File Doesn't Exist! Will Create!");
            }
            FileStream fs = info.Open(FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite);
            StreamReader sr = new StreamReader(fs);
            string strContent = sr.ReadLine();
            sr.Close();
            fs.Close();
            MessageBox.Show("File Content is:" + strContent);
        }

        private void btnException_Click(object sender, EventArgs e)
        {
            throw new Exception("I throw an Exceotion,but i don't konw what is to do ,hehe");   
        }

        private void textContent_TextChanged(object sender, EventArgs e)
        {
            this.FileContent = this.textContent.Text;
        }

        
    }
}